Camaro RS V6-191 3.1L VIN T MFI (1991)
Idle Speed: All Technical Service Bulletins
PROM - Cold Stall/Hesitation, Idle Roll/Upshift Sag
Number:
92-191-6E
Section:
6E
Date:
May 1992
Corporate Bulletin No.: 136505R
ASE No.: A1,A8
Subject:
COLD START STALL/HESITATION IDLE ROLL AND UPSHIFT SAG
Model and Year:
1990-92 CAMARO WITH 3.1 L ENGINE
THIS BULLETIN CANCELS AND SUPERSEDES DEALER SERVICE BULLETIN NO. 91-328-6E, DATED MAY 1991. THE 1992 MODEL
YEAR HAS BEEN ADDED, AS WELL AS TWO TWO IMPORTANT STATEMENTS AND THE MANUAL TRANSMISSION. THE VIN
BREAKPOINTS HAVE BEEN DELETED. ALL COPIES OF 91-328-6E SHOULD BE DISCARDED.
Condition:
Some customers may experience Cold Start Stall and/or Hesitation, Idle Roll and/or 1-2 Upshift Sag with their 1990-92 F can
Cause:
System and component variability and electromagnetic interference.
Correction:
If any of the subject conditions are found, complete the following procedure:
1.
Perform diagnostics, per Section 6E of the Service Manual. Make any adjustments as required, or replace any defective parts associated with the
above conditions.
Important:
The customer should avoid the use of high octane fuels as they do not increase performance.
2.
Replace the High Energy Ignition (HEI) module with a new P/N 16140039, and install a new Mem-Cal from the table, using the Service Manual
and attached procedure.
Important:
The appropriate model year cartridge must be used to check new MEMCALS.
Broadcast
Scanner
Part
Code
I.D.
Number
Description
AZTY
1331
16171406
MEMCAL (FED-AUTO)
AZTX
1321
16171410
MEMCAL (CALIF-AUTO)
BAWX
6651
16176864
MEMCAL (NATIONWIDE-MANUAL)
A.
Pull the underhood Electronic Control Module (ECM) continuous power fuse or disconnect the battery and leave it disconnected for at least 1
minute.
B.
Remove existing Mem-Cal and install a new service Mem-Cal per the latest service procedure.
C.
Restore the battery power and place air conditioning controls (if equipped) in the "Off" position.
D.
Firmly apply the parking brake and block the drive wheels. Start the engine, and shift the transmission to "Drive".
E.
Allow the engine to run until the engine cooling fan has cycled once, or a maximum of 10 minutes.
F Turn the ignition key to the "Off" position for at least 5 seconds.
